Maintenance
XHD Installation, Operation, and Maintenance Manual
107
Disassemble the power end XHD, grease lubrication
• The XHD grease lubricated power end also uses double lip seals as bearing isolators. The
same bearing shields employed on the XHD grease lubricated power end are used as well
to properly maintain grease in the bearings. The bearing shields can be removed,
inspected and replaced in the same manner as shown for the XHD grease lubricated
power end.
• Because of the need to provide grease to both the double lip seal bearing isolators and the
bearings themselves, there are grease fitting plugs (319H) installed in both the bearing
cartridge housing (228) and the inboard and outboard bearing end covers (109 and 119).
There are also grease relief plugs (319Y) installed in the bottom of the bearing cartridge
housing (228) for purging and regreasing of the bearings.
• There will be no sight glass (319) or opposite sight glass (408N) on the grease lubricated
power end.
Preassembly inspections
Replacement guidelines
Casing and liners check and replacement
WARNING:
Risk of death or serious injury. Leaking fluid can cause fire and/or burns. Inspect and ensure
gasket sealing surfaces are not damaged and repair or replace as necessary.
Inspect the casing and liners for cracks and excessive wear or pitting. Thoroughly clean gasket
surfaces and alignment fits in order to remove rust and debris.
• Localized wear or grooving that is greater than 3.2 mm | 1/8 in. deep
• Pitting that is greater than 3.2 mm | 1/8 in. deep
• Irregularities in the casing-gasket seat surface
Casing areas to inspect
Impeller replacement
This table shows the criteria for replacing the impeller:
Impeller parts
When to replace
Vane edges
When you see cracks, pitting, or corrosion damage
Gaskets, O-rings, and seats replacement
WARNING:
Risk of death or serious injury. Leaking fluid can cause fire and/or burns. Replace all gaskets
and O-rings at each overhaul or disassembly.
Fasteners
WARNING:
Risk of serious personal injury or property damage. Fasteners such as bolts and nuts are
critical to the safe and reliable operation of the product. Ensure appropriate use of fasteners
during installation or reassembly of the unit.
• Use fasteners of the proper size and material only.
• Replace all corroded fasteners.
• Ensure that all fasteners are properly tightened and that there are no missing fasteners.
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Страница 27: ...Installation XHD Installation Operation and Maintenance Manual 25 Direct coupled baseplate leveling worksheet ...
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Страница 157: ...Certification CE or CE ATEX XHD Installation Operation and Maintenance Manual 155 Chinese Certificate of Conformity ...